Molding machine



F. W. DUNN.

MOLDING MACHINE. APPLICATION man Auey.14, 1920.

u um n 70 i a w Q /720,6@ l l 21k/mdf M17@ 194. gm We,

F. W. DUNN.v

MOLDING MACHINE. APPLxcATxoN FILED Aus.14. 1920.

Patented Apr. 11, 41922.

I 2,046 2 SHEETS-sneer 2 40 molded with the'machine'fare'numerous andVSTA HOLDING MAGHINE.

Application .mea Aufgast 14,

To all whom t may concern:

Be it known that l, Fannnmcn lV. DUNN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain newl` and use-- ful Improvements in Molding Machines,of which the following is a specification.

This invention relates to molding machines. n. It is particularlyapplicable in molding machines wherein the molded material isV formedand compacted by centrifugal action.

One of the `objects of thisinvention is to provide an improved moldingmachine. n Another object isto. provide a molding vmachine adapted toVmold readily avariety from the specification and claimsf of objectsofdifferent shapes and sizes.

`Another object is to provide a molding ma-y chine which is efficient,simple, reliable Vin operation and readily controlled. f

Other objects and advantageswill appear l Anembodiment of the inventionis illustrat-ed in .the accompanying drawings.

In the drawings- -A Fig. 1 is a front central section ofthe maf i chine.v

' Fig.. 2 is a side elevation ofv the machine,A the base being insection,a`nd l A Fig. '3 is a side. levation ofthe base.

jThe machine comprises, infgeneral, a basel or pedestal adjustably,supporting VaV mold table and a packer and former. The packer Vandformer compact the-moldedV material'v within the mold by the effect ofcentrifugal action. The mechanismfor operating the packer is locatedwithin the baseV orV pedes-k tal of the machinei The variety of articlesVwhich may be the articles may be employed Vfor many uses.

`For example, the machine may be femployedto produce vdrain tile, sewerorother flanged tile, `building tile, silor tile, chimney tile, roofingtile, etc..- Various'sizes of prod` ucts may be producedV on the samemachine kand the the forms may be circular, oval,lrec

tangular, triangular or .of any .irregular shape. u f

a The machine illustrated is shown withV a] Vmold for makingflangedtileor pipe.

.The machine has abase l0,` inthe form of and housesthedriving-mechanism., y l l PedestallO supportsa mold table "11 venSpecification of Letters Patent.

1920. Serial BT01403533.

which the mold is carried, and a mold guide- V Patented?. Apr. 11,1922.

dinally movable packer head-13, Packer' head y13 iixed to the .upperjendof a plunger'rod 14. lunger rod 14 is featheredA through a bevel gearwheel 15, journaled` in a'bearing located in an opening in the vtopv ofthe pedestal.

Gear wheel .15 meshes with-Y Vagear wheel 16 fixed tothe end of a .shaft17. Shaft 17 isvjournaled in a bearing formed 1n the pedestal and has apulley 18 rotatably mounted thereon.

`Pulley 18 is beltedto a suitable source of power and is connected toandtdisconnected from shaft 17 by'. a suitable .clutch 1,9. Clutch 19iscontrolled through a lever 20.

Plunger rod 14: has a pair of' rings 25 ad-A justably secured thereto.`Between rings '.25 l there is a sleeve 261looselyencircling pl`unl uger rodlfl. Anti-friction vbearings -are 1n-.jf

terposedv .between the rings and sleeve. The sleeve 1s guided andheldagainst. rotation ried thereby are elevated 'by a cable 30.V

, by a pair of liXed rods 27, secured Vto the inl Y CableBO is securedat one end to a'hook 1v -i v on sleeve 26 and passes overa'drum 32. `Theother end of the Vcable'is secured .to the drum. Drum 32 isfixed to ashaft 33 which is A ]'ournaled in bearings formed in the'` pedestal. j

Shaft 33 has a gear wheel 34 loosely'mounted thereon but adapted 'to besecured thereto bya clutch 35. Gear wheell meshes with. a gear wheel 36fixed on shaft 17.

The rotation of shaft 17, through pulley l.

18, rotates plunger rod 14:.and' packer. head 13. It alsoserves toelevate and lower the plunger rodv and packer headduring their rotation,through rings 25, sleeve 26, cable 370, drum 82 and gear wheels 34:V and36. The plunger rod also may .be-elevated :manually to a comparativelyslight extent. l. y

Thisy movement is accomplished by vdepress-- inga treadle 40. Treadle 40pivotedto the pedestal and has a cable 41 secured there.- f

to. Cable 41 passes-.overand hasits other end secured to a pulley 12.-.Pulley 42 issecured to a shaft 43 journaledV in bearings in.the'pedestaL Shaft 13 has a drumklll fixed thereto. .A cable l5l passesaroundand has.l Y'

estal.

one end secured to drum dei and its other end secured to a lug e6 onsleeve 26.

l/Vhen treadle i() is depressed, the plunger rod and packer head areelevated tothe position shown in F ig. l. Tn this position the packerhead closes the bottom of the mold, as will be hereinafter described.

Mold table ll, in the machine illustrated, is arranged to support twomolds at the same time. Thus a mold may be iilled while others are beingremoved and replaced. The table may be arranged for only one mold or formore than two as desired.

Mold table ll is pivotally and adjustably supported on a. rod 50. Rod 50is adjustably carried byl an arm 5i projecting upwardly :trom thepedestal.

The mold tablecoinprises a metal plate having a pair of openings 52--52therethrough. A ledge 53 is located at the upper edge of each of theopenings 52 and serves as a seat for a die ring 54. Die ring 5ft has anopening therethrough for passage ot packer head 13. Lugs 55 whensuitably placed on the die ring, serve as a tor readily positioning theincld in proper position relative to the openings thier-@gh the molddie, hold it in alignment with the openings and prevent the mold frombeing accidentally displaced.

A rod 60 is adjustably carried by an arm 6l' which projects upwardlyfrom the ped- Arm 6l has a spring' pressed latch 62; pivoted thereto.Latch 62 cooperates with notches in mold table l1 to hold the table inproper position relativel to the packer head and to allow the table toAbe quickly and readily positioned by rotation on its axis 50.

Rods 50 and 60 adjustably support the mold guide and brace l2. ll/oldguide l2 may extend rearwardly yand be provided with a wallv to form areceptacle tor the molded material. Mold guide l2 has an opening 64therein. pening 64- has a 'circumferential ledge 65 for seating a molddie 66. Mold die 66 has an opening in its center for the passage of thepacker head and, on its underside, is provided with adjustable andremovable lugs 67.

Mold 56, which is preferably of a divided type, may be made ot metal orother suitable material. The mold has its inner Vwall formed in the sizeand shape of the article to be molded. In the drawings the mold is formaking anged bell end pipe,'such as sewer tile. This mold is of circularcross section.` The bore and outside'diameter are uniform-except for thebell or flange 7 0 near the top.

Y To form the larger innerdiameter of the ,A flange of the pipe aforming. head 71 is provided.' Head 71 is rotatably carried on a sleeve72 which encircles a shaft 73. Sleeve -72 has radially projecting arms74,

pedestal.

the ends of which are provided with bosses 7 Bosses 75 have openingstherethrough for sliding engagement with rods 50 and 60.

Tension springs 76, encircling rods 50 and 60, are connected to bosses'75 at one end and, at the other end, to a brace 77 interconnecting rods50 and 60 at their tops. These springs tend to raise the 'forming head.The head may be manually Adcpressed, however, by handles 78.

Packer head 13 is in the jform oi a cylinder having a substantially dator slightly conical top. Tivotally mounted on the top oi? 123 are a pairoi shoes 80. Shoes 8O are made of suitable hard material such as chilledsteel.Y Shoes 8() are adapted to operate with a pair of engaging members6i in head 7l as will be hereinafter described.

To tightly hold the moldbetween mold dies andV 66 during the moldingoperation. and to readily lower the mold table a short distance to allowa. mold'to be easily removed after an article has been molded,

a treadle 8.2 provided.' Treadle 82 is pivoted to thev pedestal'and hasa rod 83 pivoted thereto.. Rod 83 is pivotally connected to aV small cam811# ivoted to the Y, c P

Cam 8a engagesV a roller on the central boss of table ll'. When treadle82 is depressed, as shown in Figlcam 84 moves table ll upwardly, therebytightly clamping the mold in position between moldV diesA 54 and 66.rThe treadleis held in this position by a suitable latch 85. i v i lWhenlatch 85 and treadle 82 are released, weight of the table lowers thesame until the top edge of the mold' is below the lower edge etadjustable lugs 67. Thereupon the table may be rotated on its axis 50 tomove the molded article and position a new mold above the packer head.

The operation ot the machine is brieflyy as followsr- Y Mold dies 54;and 66 of the proper size and shape for the articles to be moldedhaving` been secured in place by table l1 and guide 12, respectively,the mold of the de- .'red size and outline is then positioned on thetable. 'Latch 62 is withdrawn and the table is rotated until Athe moldis over the packer head. Then treadle 82 is depressed and the mold istightly yclamped between mold diesA 54 and 66. Next, treadle 40 isdepressed and the packer head is raised until the topl of thecvlindercomes iushpwith volve and rise. The rotation of the'head Havingdescribed my invention `what I claim as new and desire to secure byLetters Patent is 1. A molding machine having a mold supi port, akpacker head, mechanism for rotatmg and driving the packer head througha mold on the support, and a forming head (2o-operating with andoperated by the packer head to form and compact the molded article.

2. A molding machinehaving a rotatable and longitudinally movable'packerhead, a support for holding a mold, 'and a movable forming vheadco-operating withv and'operated by the packer head to compact a-ndform amolded article within the mold.

3. A molding machine having'a mold support, a packer head rotatably andlongitudinally movable through a mold on the support, and a rotatableand longitudinally movable forming head co-operating with and operatedby the packer head to compact and form a molded article within the mold.

et. A molding machine having a support for holding a mold, a rotatableand longi-VV tudinally movable packer head for compacting and forming amolded Aarticle within the mold by forcing the molded materialoutwardlyagainst the inner wall of the mold, and a rotatable and longitudinallymovable forming head rotated by the packer head and (5o-operatingVtherewith tol form a molded article within the mold.

5. A kmolding machine having a movable mold supporting table, a moldVguide above the table and manually operable means for moving the tabletoward; andk from guide to clamp a mold between the same andto release'the mold for ready removal.

Forming head 7l isV 6. A molding machine having a table for supportinganV open endedV mold, a, packer head longitudinally movable through themold to compact and form an article therein, power connections fordriving lthe packer head through the mold, and manually opera-` blemeans for moving the packer head to cio close the mold for the insertionof the molded A material.

7; A molding machine having apedestal, l

a mold supportcarried by the pedestal, a packer head rotatable andlongitudinally movable into a mold carried by the support l to compactand form aV molded article within the mold, a drum, a cableinterconnecting the drum and packer head to longitudinally move thepacker head, and power connec' tions for driving the drum.

VSQA molding machine having a hollow base,a mold table anda mold guideV'siipported on the base and adapted to clamp a mold between'them, `arotatable packer head longitudinally movable in the mold,l 1 mechanismlocated in the base for rotating the packer-head, a drum land cablewithin the packer head, and a Aforming head supthe base and acting tolongitudinally move,

ported by the base and co-operating withy l the packer headl to compactand forma molded article within the mold., l Y i 9. A molding machinehaving Ytwo spaced apart perforated mold dies, between which other; arotatableV acker head *movable through the mold an radially movable lugsadjustable.aroundV said perforations, on con fronting sides to providespective ends of the mold.

9o guides for the rel0. Amolding machine having two spaced apartperforated mold die plates, between which to contain a hollow mold;means to move the plates toward and from each other to -clamp andrelease the mold; a` `V packer 1 head movable through each die into'themold and a series ofl tapered lugs radially adj ustable aroundsaidperforations onconfronting surfaces thereofto guidev the mold inplace with respect to the perforations in the dies.

In testimony whereof' I hereunto sub-"f scribed Amy. name.

FREDERICK W. DUNN.Y

a'. to contain and clamp a'liollow mold; means i to move the dies towardand Vfrom each

